A circuit is so formed such that source-R-L-diode-switch are all in series. Consider the initial current in L to be zero. The diode is so connected that it is forward biased when switch is closed.When the switch is closed,

• A. the current will decay exponentially & the voltage will increase exponentially
• B. the current will increase exponentially & the voltage will decay exponentially
• C. the current will fall to zero & the voltage both will decay exponentially
• D. the voltage and the current both remain constant